Highly Compact All-Solid-State Beam Steering Module Based on a Metafiber

He, Nan; Xu, Xinan; Guo, Tingbiao; Chen, Rui; Xing, Yanpeng; Jin, Yi; He, Sailing

doi:10.1021/acsphotonics.2c00848

Cited by 8 publications

(10 citation statements)

References 29 publications

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“…The key component, metalens, adopts a quadratic phase profile with a large FOV and a planar focal surface at the cost of a large spherical aberration especially when the numerical aperture (NA) is large. − The phase profile is described by eq : φ false( r false) = − k 0 r 2 2 f where k 0 , r , and f are the wave vector in free space, the distance to the lens center, and the focal length, respectively. The focal length is set to 2 mm in the design.…”

Section: Resultsmentioning

confidence: 99%

High-Speed Duplex Free Space Optical Communication System Assisted by a Wide-Field-of-View Metalens

Guo

Tian

et al. 2023

ACS Photonics

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Free space optical communication (FSO) has gained significant attention due to the growing demand for a high information capacity. For FSO between multiple or moving targets, a receiver with a wide angle of acquisition capability is necessary. Traditionally, gimbals and fast steering mirrors have been used, but they are often difficult to make both compact and wide-angle. Here, a novel duplex FSO system is demonstrated, which utilizes a highly compact fiber coupling metalens to receive and transmit signals in a large field of view up to 80°. High coupling efficiency up to 48.8% at a wavelength of 1550 nm is experimentally achieved. The small coupling loss enables the user to modulate and direct the downstream power from the base station back along the same path, saving energy and leaving only one source in the FSO system. The low bit error rate and the open and clear eye diagram results validate the excellent downlink/ uplink communication performance of a 10 Gbps FSO system empowered by the metalens. The system exhibits a large field of view, high data rate, compact size, and low power consumption, which meets the size, weight, and power requirement of smart devices.

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Section: Resultsmentioning

confidence: 99%

High-Speed Duplex Free Space Optical Communication System Assisted by a Wide-Field-of-View Metalens

Guo

Tian

et al. 2023

ACS Photonics

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“… 182 , © 2022 Indra Ghimire et al, published by De Gruyter, Berlin/Boston, b from ref. 183 Copyright © 2022 American Chemical Society, c from ref. 184 Copyright © 2022, Haoran Ren et al, d from ref.…”

Section: Integration With Conventional Optical Elementsmentioning

confidence: 99%

“…Additionally, beam-steering metafiber modules have been proposed through the integration of metalens with fiber arrays (Fig. 10b ) 183 . To construct a beam-steering metafiber module, metalenses are first fabricated on a SiO 2 substrate and then attached to the end of the single-mode fiber arrays.…”

Section: Integration With Conventional Optical Elementsmentioning

confidence: 99%

Integrated metasurfaces for re-envisioning a near-future disruptive optical platform

et al. 2023

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Metasurfaces have been continuously garnering attention in both scientific and industrial fields, owing to their unprecedented wavefront manipulation capabilities using arranged subwavelength artificial structures. To date, research has mainly focused on the full control of electromagnetic characteristics, including polarization, phase, amplitude, and even frequencies. Consequently, versatile possibilities of electromagnetic wave control have been achieved, yielding practical optical components such as metalenses, beam-steerers, metaholograms, and sensors. Current research is now focused on integrating the aforementioned metasurfaces with other standard optical components (e.g., light-emitting diodes, charged-coupled devices, micro-electro-mechanical systems, liquid crystals, heaters, refractive optical elements, planar waveguides, optical fibers, etc.) for commercialization with miniaturization trends of optical devices. Herein, this review describes and classifies metasurface-integrated optical components, and subsequently discusses their promising applications with metasurface-integrated optical platforms including those of augmented/virtual reality, light detection and ranging, and sensors. In conclusion, this review presents several challenges and prospects that are prevalent in the field in order to accelerate the commercialization of metasurfaces-integrated optical platforms.

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“…Here, utilizing the flexibility to manipulate beams, an all-in-one collimating splitter based on metasurfaces is proposed, with a compact configuration and excellent optical performance, as shown in Figure 1b. The designed metasurface combines the functions of the collimator and the splitter and can be conveniently integrated on the end face of the single-mode fiber using methods like bonding [17,38].…”

Section: Concept Of the All-in-one Collimating Splittermentioning

confidence: 99%

“…In addition, the fabrication of the planar nanostructures of the metasurfaces enjoys good CMOS compatibility, which is much simpler than the multilevel DOE fabrication process. Thanks to the flexibility in manipulating light and the good CMOS compatibility in terms of fabrication, various applications of metasurfaces have been demonstrated, including imaging [9][10][11][12], holography [13][14][15][16], beam steering [17][18][19][20][21][22], beam shaping [23,24] and so on. Recently, metasurfaces based on Dammann grating have been proposed for realizing versatile beam functions in different diffraction orders [25][26][27][28] or switchable functions empowered by tunable materials [29,30].…”

Section: Introductionmentioning

confidence: 99%

All-in-One Collimating Splitter Based on a Meta-Fiber Platform

Guo

Jin

et al. 2023

Applied Sciences

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The use of array generators has become ubiquitous in various applications such as laser fabrication, face identification, and motion sensing. The Dammann grating, a diffractive optical element, is the mainstream approach for generating uniform spot arrays. However, its limited capability and the contradiction between the performance and the complexity of fabrication hinder its application. To address this issue, an all-in-one collimating splitter based on metasurfaces is theoretically proposed by synthesizing the phase of an inverse-optimized Dammann grating and a collimating lens. Leveraging both the diffraction effect of Dammann grating and the Fourier transformation of the collimating lens, the number of spot arrays can be largely increased with a single lenslet. The proposed design shows a large field of view of 62° × 62° and a high uniformity of 1.29% in generating a spot array of 3 × 3 on a single-fiber platform, confirmed by both the scalar and full-wave simulation. Further, a larger spot array up to 15 × 15 is also derived in the far field by integrating the proposed metasurface on a 5 × 5 fiber array platform, confirmed by the scalar simulation. Our design may be transplanted to the vertical-cavity surface-emitting laser platform, and shows great potential in various applications including face identification and motion sensing.

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Highly Compact All-Solid-State Beam Steering Module Based on a Metafiber

Cited by 8 publications

References 29 publications

High-Speed Duplex Free Space Optical Communication System Assisted by a Wide-Field-of-View Metalens

High-Speed Duplex Free Space Optical Communication System Assisted by a Wide-Field-of-View Metalens

Integrated metasurfaces for re-envisioning a near-future disruptive optical platform

All-in-One Collimating Splitter Based on a Meta-Fiber Platform

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